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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The viscosity of water is __________ than that of mercury.

Higher
None of these
Lower
Same as

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Hydraulics and Fluid Mechanics in ME
The flow in which the velocity vector is identical in magnitude and direction at every point, for any given instant, is known as

steady flow
one dimensional flow
turbulent flow
uniform f^w

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Hydraulics and Fluid Mechanics in ME
A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.

Less than
More than
None of these
Equal to

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Hydraulics and Fluid Mechanics in ME
The power developed by a turbine is (where H = Head of water under which the turbine is working)

Inversely proportional to H1/2
Directly proportional to H1/2
Inversely proportional to H3/2
Directly proportional to H3/2

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Hydraulics and Fluid Mechanics in ME
A flow is called hyper-sonic, if the Mach number is

Less than unity
None of these
Unity
Between 1 and 6

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Hydraulics and Fluid Mechanics in ME
The type of centrifugal pump preferred for a specific speed of 20 r.p.m. is

High speed pump with axial flow at outlet
High speed pump with radial flow at outlet
Medium speed pump with radial flow at outlet
Slow speed pump with radial flow at outlet

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